Typical C&M tests are pencil and paper-based. And hand calculations that will fit on the back of an envelope are often found on these tests. C&M students are urged to use the calculational device most appropriate for the problem. Sometimes hand calculations are the most appropriate calculational device.
The most useful thing for me about these courses is the fact that I when I do need to use material from any of these classes, I can picture the problem in my mind and have little trouble setting up an answer. If I were armed only with equations and paper and pencil, I wouldn't even know where to begin.
Techs support both the lab machines and the software used in this program.
In the event of a problem, send an e-mail to tech@cm.math.uiuc.edu.